JP2005104567A - Cold-keeping container having multiple divisions - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To divide one cold-keeping container into two or more divisions with different cold keeping temperatures such as a lower-temperature side division and a higher-temperature side division while being a cold-keeping container made of a synthetic resin foamed body, and to enable the industrial utilization. <P>SOLUTION: This cold-keeping container 1 comprises a container main body 2 which can be divided into two or more divisions having different cold-keeping temperatures, and a lid body 3. The thickness of either one or all of the side wall 5 and the bottom surface of the container main body of the lower-temperature side division, and the lid body is made larger. At the same time, the cold-keeping container 1 is constituted in such a manner that a bulkhead 4 for dividing the container into the lower-temperature side division and the higher-temperature side division may be provided. In addition, the bulkhead is made attachable to and detachable from the container main body of the cold-keeping container having multiple divisions while being the cold-keeping container comprising the container main body which can be divided into two or more divisions having different cold-keeping temperatures, and the lid body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cold insulation container made of a synthetic resin foam, and more specifically, from a container body and a lid that can be divided into two or more compartments having different cold insulation temperatures, such as a low temperature side compartment and a high temperature side compartment. It relates to a cold storage container.

  A container made of a synthetic resin foam such as polystyrene resin is light in weight and excellent in heat insulation, so as a cold storage container using a refrigerant such as dry ice, a cold storage agent, a cold storage agent or ice, a fish box, It is widely used as a transport container for various fresh foods such as vegetable containers.

  Therefore, various devices relating to the cold insulation container using these refrigerants are disclosed in many patents, utility models and the like. For example, Patent Document 1 discloses an invention in which a cold storage container is partitioned into a plurality of rooms by using a cool storage pack in which a plurality of cool storage bodies filled with a cool storage agent are connected, and drinking water is divided and stored.

  Patent Document 2 discloses a cold storage container in which an ice chamber is provided in the center of a container body with a partition wall and product chambers are provided on both sides of the ice chamber.

  Further, Patent Document 3 discloses a cold storage container in which the thickness of the container side wall is changed in the vertical direction in order to enable cold storage in a plurality of temperature zones with one cold storage container.

Furthermore, Patent Document 4 discloses a packaging technique for assembling and transporting normal temperature, refrigerated and frozen foods. The contents are double wrapping with an inner box inside the outer box, a room temperature room is provided in the outer box space above the inner box, the refrigerator compartment is in the inner box, and the freezer room is in the lower box. A packaging method and a packaging box. However, it is noted that these packages are made of corrugated cardboard and paperboard, not styrofoam containers, which have a large heat insulation effect but a large inventory space, make cosmetic printing difficult, and cause excessive design and production costs outside the standard. Yes.
Japanese Patent Laid-Open No. 11-6664 (page 1-13) Utility Model Registration No. 3030924 (page 1-4) Japanese Utility Model Publication No. 5-90279 (page 1-3) JP-A-5-229575 (page 1-7)

  As described above, there are various attempts, but using a polystyrene foam container with good heat insulation performance, when one cold storage container is seen in a plane, a partition is provided and divided into two or more sections. No attempt has been made to store, transport, store, etc. refrigerated objects having different refrigeration temperatures. However, for example, there is a great demand to send a frozen product and a refrigerated product in a single cold storage container, for example, by direct delivery from a production area or a souvenir box.

  Conventionally, in such a case, each is a separate container, one is packed with a refrigerant such as dry ice or a low-temperature cold storage agent, and the other is packed with a refrigerant such as a cold storage agent or a cold storage agent. And it was natural to send them separately. This is because it is not easy to maintain different cooling temperatures with a single cold storage container, and it has been unavoidably difficult to put into practical use if various modifications are made to the cold storage container.

The present invention solves the above problems by using various effective means that do not increase the cost. That is,
(1) A cold insulation container composed of a container main body and a lid that can be divided into two or more compartments having different cold insulation temperatures, and the thickness of any or all of the side wall, bottom surface, and lid of the container main body in the low-temperature compartment A multi-compartment cold storage container that is enlarged and has a partition that partitions the container into a low-temperature compartment and a high-temperature compartment.
(2) A multi-compartment cold insulation container comprising a container main body and a lid that can be divided into two or more compartments having different cold insulation temperatures, wherein the partition wall is detachable from the container main body.
(3) The multi-compartment cold storage container according to (1), wherein the partition wall is detachable from the container body.
(4) The multi-compartment cold storage container according to (2) or (3), wherein a groove or a protrusion into which a partition wall can be inserted is provided on the bottom and / or side wall of the container body so that the volume of the compartments can be changed. .
(5) The multi-compartment cold storage container according to any one of (2) to (4), wherein a groove or a protrusion into which the partition wall can be inserted is provided in the lid so that the volume of the compartments can be changed.
(6) The multi-compartment cold storage container according to any one of (1) to (5), wherein the density of the partition walls is different from the density of the container body.
(7) The multi-compartment cold storage container according to (1), wherein the partition wall is integrally formed with the container body, and the partition wall thickness is 15 mm or more.
(8) The multi-compartment cold storage container according to any one of (1) to (7), wherein a ventilation hole is provided in the partition wall.
(9) 1) There is a recess for mounting the refrigerant mounting plate at the upper end of the side wall and the upper end of the partition wall of the low temperature side section, or 2) The refrigerant is mounted near the upper part of the side wall of the low temperature side section and the partition wall. The multi-compartment cold storage container according to any one of (1) to (8), wherein the multi-compartment cold storage container has a convex part for mounting the mounting plate.
(10) 1) It has a concave notch for placing a refrigerant mounting plate on the upper end of the side wall and the partition wall of the high temperature side section, or 2) For placing the refrigerant in the vicinity of the upper part of the side wall of the high temperature side section and the partition wall The multi-compartment cold storage container according to (9), wherein the multi-compartment cold storage container has a convex portion for mounting the plate.
(11) 1) A refrigerant storage space is provided below the low temperature side compartment of the lid, or 2) a refrigerant storage space is provided below the low temperature side compartment of the lid and the high temperature side compartment of the lid. The multi-compartment cold storage container according to any one of (1) to (8).
(12) The multi-compartment cold storage container according to any one of (9) to (11), wherein the lid portion corresponding to the low-temperature compartment is configured to be insertable from above.
(13) The multi-compartment cold storage container according to (9) to (11), wherein the lid portion corresponding to the high temperature side compartment is configured to be insertable from above.
(14) The multi-compartment cold storage container according to any one of (1) to (13), wherein dry ice is used as a refrigerant in the low-temperature compartment.

  In one cold storage container, for example, freezing and cold storage at a low temperature such as around −25 ° C. to −20 ° C., for example, with dry ice, and refrigerated cold storage at a normal temperature such as around 0 ° C. to 5 ° C. to 7 ° C. Since the object to be cooled in the above temperature range can be stored and transported, various kinds of stored goods can be rationally transported at a low cost in a direct delivery service or the like. Moreover, this cold storage container has a simple structure, is sufficiently reasonable in cost, and is extremely useful industrially. In addition, although it is set as two or more temperature divisions in a freezing temperature range like -25 degreeC--20 degreeC and -5 degreeC-0 degreeC, for example, it cannot be overemphasized that it can employ | adopt suitably. In the present invention, two or more suitable between a low temperature zone (for example, −25 ° C. to −20 ° C.) that can be achieved by using dry ice or the like as a refrigerant and a high temperature zone (for example, 0 ° C. to 10 ° C.) that can be achieved by a cryogen or the like. Enables multi-compartment cooling in the temperature range.

  The cold storage container of the present invention is formed from a synthetic resin foam. The synthetic resin foam here is a synthetic resin obtained by foam molding a foamable synthetic resin obtained by impregnating a synthetic resin such as a styrene resin such as polystyrene or a polyolefin resin such as polyethylene or polypropylene with a foaming agent. It is a resin foam. Furthermore, a method of directly obtaining a synthetic resin foam by adding a foaming agent to a molten synthetic resin without going through a foamable synthetic resin may be used.

  Among these synthetic resin foams, expandable styrene resin particles obtained by impregnating a foaming agent into particles of styrene resin represented by polystyrene were pre-foamed with a heat medium such as water vapor. Styrenic resin foam obtained by filling pre-expanded particles in a mold and molding in a mold with a heating medium such as water vapor is most preferable from the viewpoint of cost and physical properties.

  And the cold storage container of this invention consists of a container main body and a cover body which can be divided | segmented into two or more divisions from which cold storage temperature differs. That is, the container of the present invention is a single cold storage container, a low temperature side compartment for storing a cold object that needs to be kept at a lower temperature side, and a high temperature side compartment that contains a cold object that needs to be kept at a higher temperature side. Thus, it can be divided into two or more sections having different cold insulation temperatures. Therefore, it may be divided into three sections such as a low temperature side section, an intermediate temperature side section, and a high temperature side section, or may be further divided so that the cold insulation temperature can be divided finely. However, as the number of compartments increases, the cold storage container becomes more complicated and the storage capacity of each compartment decreases. Therefore, two or three compartments are the most reasonable.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view of a cold container showing an embodiment of the present invention. The cold insulating container 1 of the present invention includes a container body 2 and a lid body 3 fitted thereto. And the container main body 2 can be divided | segmented by the partition 4 into the two or more divisions from which cold insulation temperature differs, for example, the low temperature side division A and the high temperature side division B. FIG. A fitting projection 8 is provided on the upper end surface of the side wall 5 of the container body 2, and a fitting recess 30 is provided on the lower end surface of the lower peripheral edge of the lid 3. In the example of FIG. 1, the fitting protrusion 8 is shown on the upper end surface of the side wall 5, and the fitting concave portion 30 is shown on the lower end surface of the lower peripheral edge of the lid, but this uneven relationship may be reversed. That is, a recess may be provided on the upper end surface of the side wall, and a protrusion may be provided on the lower end surface of the lower periphery of the lid. Further, the shape of the concave / convex shape of the fitting is not limited as long as the fitting is possible.

  Further, the upper end surface of the partition wall 4 is provided with a fitting convex portion 31 and a fitting recess portion 32 provided on the lower end surface of the lid body 3 side partition wall 4 ′ formed at the lower portion of the top plate 7 of the lid body 3. The fitting convex part 31 and the fitting concave part 32 are shaped to fit each other. In this case as well, the concavo-convex relationship may be reversed, and the concavo-convex shape is not limited as long as fitting is possible.

  The side wall 5 and the bottom surface 6 of the container body 2 are formed to have a large thickness at the side wall 5a and the bottom surface 6a of the low temperature side section A, while the thickness of the side wall 5b and the bottom surface 6b of the high temperature side section B is formed to be small. ing. This is to keep the heat conduction in the low temperature side section low and to keep it at a freezing and cold holding temperature of about −25 ° C., for example, with dry ice or other refrigerants.

  Furthermore, the top plate 7 of the lid 3 corresponding to the low temperature side section A of the container body and the top plate 7a of the low temperature side section formed with a large thickness and the high temperature side section B of the container body are formed with a small thickness. And the top plate 7b of the high temperature side section. For the low temperature side compartment A and the high temperature side compartment B, the thickness of the side wall 5 and bottom surface 6 of the container body 2 and the top plate 7 of the lid 3 are the cold insulation temperature, the cold insulation time, the cold insulation amount required for each container, It is determined by designing according to the amount of the cold insulation material, the expansion ratio of the container, the surrounding environment of the container, and the like.

  Increasing the thickness of the side wall, bottom surface, and lid of the container body in this way is most preferable to increase the heat insulation performance of the low-temperature side section, but if necessary, the thickness of either the side wall or the bottom surface of the container body is increased. It goes without saying that changes such as the same thickness as the high temperature side compartment can be implemented as appropriate. Of course, changes such as making the thickness of the lid the same as the thickness of the high temperature side compartment can be implemented as needed.

  The partition 4 is provided with projections 100 and 101 between the bottom 6a and the bottom 6b so that both the low temperature side compartment A and the high temperature side compartment B can be divided, and the lower part of the partition 4 is inserted between both projections. Make it. In addition, in the protrusions 100 and 101 in FIG. 1, the protrusion 101 is thinner than the protrusion 100, but it is not always necessary to change the size in this way. In another embodiment as shown in FIG. 2, the partition wall 4 may be integrally formed with the container body 2 and may be erected directly from the bottom portion 6.

  In another embodiment shown in FIG. 3, the volume of both compartments can be changed according to the amount of the cold object to be accommodated in each of the low temperature side compartment A and the high temperature side compartment B. That is, a plurality of protrusions 100, 101, 102, 103, 104,... Are provided on the inner surface of the bottom 6, and the lower part of the partition 4 is inserted between the protrusions 100, 101, 102, 103, 104,. The partition wall 4 is erected from the bottom 6. .. Instead of the projections 100, 101, 102, 103, 104..., A recess is provided on the inner surface of the bottom portion 6, and a plurality of grooves that allow the partition wall 4 to stand up from the bottom portion 6 by inserting the lower portion of the partition wall 4. It can also be provided.

  On the other hand, a plurality of protrusions 110, 111, 112, 113, 114,... Are provided on the lower surface of the top plate 7 of the lid at positions corresponding to the bottom 6 of the container body. .. Instead of the projections 110, 111, 112, 113, 114..., A recess is provided on the lower surface of the top plate 7, and a groove that can support the partition wall 4 erected from the bottom portion 6 by inserting the upper part of the partition wall 4. A plurality can be provided.

  The protrusions and grooves may be provided in parallel to the short side of the container, or may be provided at an angle with respect to the short side of the container. Or you may provide in parallel with respect to the long side of a container, or you may provide with a certain angle with respect to the long side of a container. Furthermore, such protrusions can be mixed.

  Since the partition walls 4 only need to be erected, two partition walls 4 are required to stand between the protrusions, and four or more partition walls 4 are required to change the volume of both sections. In the case of a groove, if there is one, it can stand up, and two or more may be used to change the volume of both sections. Here, the method of standing the partition wall 4 is not only standing between the projections, but also the unevenness provided on the bottom surface of the bottom portion 6 and the top plate 7 and the bottom and top portions of the partition wall 4 fitted thereto. It can also be erected by unevenness. Therefore, the present invention is not limited to the protrusions and grooves as described above, and it is needless to say that any uneven shape that can be fitted to each other can be adopted.

  The partition wall 4 can have the same expansion ratio as that of the container body 2, but can also have a different expansion ratio. When the expansion ratio of the container body 2 and the partition wall 4 is set to the same expansion ratio, the partition wall 4 may be thickened to increase the heat insulation performance, and the partition wall 4 thickness may be increased to improve heat transfer. You can make it thinner. On the other hand, by setting the expansion ratio of the container body 2 and the partition 4 to different expansion ratios and increasing the heat insulation performance of the partition 4, the temperature difference between the adjacent low temperature side section A and the high temperature side section B can be kept large. By reducing the heat insulation performance of the partition wall 4, it is possible to efficiently transmit the effect of the refrigerant in the low temperature side section A to the high temperature side section B. A thin partition is a preferred embodiment because the internal volume of the container can be increased. If the partition wall is not integrally formed with the container body 2 as shown in FIG. 1 and is detachable, the expansion ratio of the partition wall 4 can be freely selected. Therefore, the expansion ratio of the partition wall is different from the expansion ratio of the container body. This is a very preferable mode when it is desired to achieve a foaming ratio. When it is desired to freely change the thickness of the partition wall, the inner surface of the lower part 6 of the container body 2 and the lower part of the top plate 7 are lower than the means for standing the partition wall between the projections or inserting the partition wall into the groove. It can be said that it is a preferable aspect because the degree of freedom is increased by the concavo-convex provided on the upper and lower sides of the partition wall 4 and the concavo-convex provided on the uppermost part that are fitted to each other.

  Further, as shown in FIG. 2, in the case of the partition wall 4 integrally formed with the container body 2, for example, a part of the partition wall 4 is filled with a raw material having a low expansion ratio (for example, pre-expanded particles having a low expansion ratio), By filling a portion other than the partition wall 4 with a raw material having a high expansion ratio (for example, pre-expanded particles having a high expansion ratio) and performing foam molding in the mold, the expansion ratio of the partition wall 4 is low and the expansion ratio of the container body is high. Since it can be used as a container, it is possible to obtain an economically superior container that is light in weight and has a large storage volume.

  In FIG. 2, the partition wall 4 includes a partition wall 4 that is integrally formed with the container body 2, and a lid body 3 side partition wall 4 ′ that is formed below the top plate 7 of the lid body 3. The upper wall of the container body 2 side partition 4 is closed and integrated with the fitting convex portion 31 and the fitting recess 32 provided on the lower end surface of the lid 3 side partition 4 '. 4 is formed.

  In the embodiment shown in FIG. 1, a ventilation hole 9 for introducing the cold air from the low temperature side compartment A into the high temperature side compartment B is provided in the upper part of the partition wall 4 (the side close to the lid). And it is preferable to provide this ventilation hole 9 in the upper part of the partition 4, and it is preferable to provide two or more from the efficiency of ventilation | gas_flowing. This vent hole 9 is provided in the upper part of the partition wall 4 for introducing the cold air from the dry ice D that keeps the low temperature side compartment A cold or the kind of cold storage agent that can secure a low temperature into the high temperature side compartment B. Therefore, the cold air warmed in the low temperature side compartment A stays in the upper part in the low temperature side compartment A, and in particular when dry ice D is used, it is pushed out to the high temperature side compartment B by the pressure of sublimated carbon dioxide gas. Thus, the temperature of the high temperature side section B is cooled by the cold air introduced from the vent hole 9. The temperature of the high temperature side section B is affected by the thickness of the partition wall 4, the expansion ratio, the diameter of the air holes 9 above the partition wall 4, the number of holes, and the like. Therefore, these requirements are designed and determined according to the cold insulation temperature, the cold preservation time, the refrigerant amount, the amount of the cold insulation material, the ambient environment of the container, and the like.

  In the embodiment of FIG. 1, recesses 10 and 11 are provided at the upper end portion of the side wall 5 a of the low temperature side section A and the upper end portion of the partition wall 4. A mounting plate 15 is mounted. On the refrigerant mounting plate 15, dry ice D, which is a refrigerant in the low temperature side section A, and a type of cold storage agent that can ensure a low temperature are mounted. In addition, the perforated plate as an example which has the through-hole for diffusing the cold air by a refrigerant was described for the board | substrate 15 for refrigerant | coolant mounting of FIGS. 1-3. This is because it is preferable that the refrigerant mounting plate 15 is a foam as in the case of the cold storage container and has a through hole when it has heat insulation performance. However, when the refrigerant mounting plate 15 is formed of a non-foamed normal synthetic resin having high heat conductivity to some extent, cooling with the refrigerant is possible without necessarily having through holes.

  In the embodiment of FIG. 2, convex portions 21 and 22 are provided in the vicinity of the upper portion of the side wall 5 a of the low temperature side section A and in the vicinity of the upper portion of the partition wall 4. A plate 15 is mounted. Similarly, dry ice D and a low-temperature regenerator are placed on the refrigerant placement plate 15. And the convex parts 23 and 24 are provided in the upper part vicinity of the side wall 5b of the high temperature side division B, and the upper part vicinity of the partition 4, These convex parts 23 and 24 are as the board | substrate 16 for refrigerant | coolant mounting. A perforated plate is mounted. On the refrigerant mounting plate 16, a cooling agent R suitable for the set temperature of the high temperature side section B is mounted. In place of the convex portions 23 and 24 provided near the upper portion of the side wall 5b of the high temperature side section B and the upper portion of the partition wall 4, the upper end portion of the side wall 5b and the upper end portion of the partition wall 4 as shown in FIG. Of course, a recess can be provided as shown in FIG. In the embodiment shown in FIG. 2, an example in which the vent hole 9 is not provided is shown.

  Carbon dioxide gas generated by sublimation from dry ice D as a refrigerant has considerably higher permeability through expanded polystyrene resin than oxygen, so it is said that there is little need to pay attention to the exhaust of carbon dioxide gas. Yes.

  However, when the vent hole 9 is not provided in the vicinity of the upper portion of the partition wall 4 as shown in FIG. 2, when it is desired to properly exhaust the carbon dioxide gas filling the low-temperature side compartment A, the upper portion of the side wall 5a and the lid body as shown in FIG. It is also possible to evacuate out of the container from the exhaust slit 12 provided in the fitting portion. When dry ice D is not used as the refrigerant in the low temperature side compartment A and a regenerator or the like that can secure the target low temperature is used, carbon dioxide gas is not generated due to sublimation of the dry ice D.

  In FIG. 1 and FIG. 2, after the object to be cooled is stored in the container, the recesses 10, 11 and the protrusions 21, in which the refrigerant placement plate 15 and the refrigerant placement plate 16 are provided on the side walls and the partition walls, After being placed on 22, 23, 24 and closed, refrigerant such as dry ice D for the low temperature side compartment A, a regenerator, etc., or a refrigerant such as a cold insulation agent R for the high temperature side compartment B, a regenerator, etc. An example is shown in which opening / closing portions 13a and 13b that can be inserted into a lid are provided so as to be housed in a container. The opening / closing portions 13a and 13b are formed by cutting the top plate 7 of the lid 3 into a rectangular shape, and stepped portions x and y are provided around the opening and closing portions 13a and 13b to ensure insertion and use. It is a preferred embodiment to prevent dropout.

  In contrast to the above example, an example in which a space for storing refrigerant is provided in the lid 3 will be described below. In this case, if a lid containing the refrigerant is prepared in the refrigerant storage space, it can be used by closing the lid immediately after the object to be cooled is stored in the container.

  For example, FIG. 4 is a modification of the embodiment shown in FIG. 2, in which refrigerants such as dry ice D, a cold storage agent, and a cold insulation agent R are provided in the vicinity of the upper side of the side wall and in the partition wall. An example in which the refrigerant is accommodated by another method instead of being mounted on the convex portion will be described. For example, a refrigerant mounting refrigerant receiving plate 17 provided with a plurality of concave and convex engaging portions 18 on the periphery is prepared, and the peripheral edge of the refrigerant mounting refrigerant receiving plate 17 is further provided at the lower peripheral edge of the lid. By providing a plurality of concave and convex engaging portions 18 ′ to be fitted to the plurality of concave and convex engaging portions 18 provided on the inner surface, and inserting and engaging the both engaging portions 18 and 18 ′, dry ice D and cold insulation material are provided. R is accommodated in a refrigerant accommodating space formed by a refrigerant receiving plate 17 for placing the refrigerant and a lower part of the top plate of the lid.

  The state in which both the locking portions 18 and 18 'are inserted and locked is shown in FIG. 5 which is a plan view illustrating the lid rear surface turned upside down. In the embodiment shown in FIGS. 4 and 5, after the refrigerant is accommodated in the lower part of the top plate of the lid, the engaging portion 18 on the peripheral edge of the refrigerant receiving plate 17 and the lower part 18 'on the peripheral part of the lid are fitted. When the lid is fixed and closed, the convex portion 18 on the periphery of the refrigerant receiving plate 17 is supported so as to be placed on the upper portion of the side wall of the container body, so that the refrigerant receiving plate 17 falls during transportation. It is preferable without fear. In addition, although the example which provided the through-hole which lets cold air pass in the refrigerant | coolant receiving plate 17 shown in FIG. 4 is disclosed, the through-hole of the refrigerant | coolant receiving plate 17 is not essential. When the refrigerant receiving plate 17 is a foam like the container and has heat insulation performance, it is preferable to have a through hole. However, the refrigerant receiving plate 17 is a non-foaming ordinary synthetic resin having a high degree of heat transfer, etc. In the case of being molded with, cooling with a refrigerant is possible without necessarily having a through hole. FIG. 5 shows a fitting recess 30 on the lower end surface of the periphery of the back surface of the lid that engages with the fitting protrusion 8 provided on the upper end surface of the side wall of the container body. Further, a lid-side partition wall 4 ′ that fits into the container body-side partition wall 4 is shown. Furthermore, a fitting recess 32 provided on the lower end surface of the partition wall 4 ′ on the lid side that engages with the fitting convex portion 31 provided on the upper end surface of the partition wall 4 on the container body side is also shown.

  FIG. 6 is a plan view of the container main body of the embodiment shown in FIG. 3, and in order to partition the low temperature side section A and the high temperature side section B, protrusions 100, 101, 102, 103, and 104 are provided on the bottom 6. Further, an example in which the protrusions 100, 101, 102, 103, 104 are continuously provided from the bottom 6 to the side wall 5 is illustrated. However, it is only necessary that the partition wall 4 can be erected, and these protrusions do not necessarily have to be continuous from the bottom portion 6 to the side wall 5 and need not be discontinuous in some places. Further, it is possible that a protrusion is provided on the bottom 6 and no protrusion is provided on the side wall 5. Further, the side wall 5 may be provided with a protrusion and the bottom portion 6 may not be provided with a protrusion. As shown in FIG. 6, when provided continuously from the bottom 6 to the side wall 5, the partition wall 4 is stable and the gap between the partition wall 4, the bottom part 6 and the side wall 5 is maintained. This is the most typical and preferred example because it can be prevented from forming and heat insulation is made efficient. FIG. 6 shows an example in which the partition 4 is erected between the protrusions 102 and 103. The side wall 5a is provided with a convex portion 21 for mounting the refrigerant placement plate, and the side wall 5b is provided with a convex portion 23. The partition wall 4 is provided with convex portions 22 and 24 for the same purpose.

  As shown in FIG. 7, the partition wall 4 may have a shape having a hollow portion 50 to improve heat insulation performance. As for what shape the hollow portion 50 is provided in the partition wall 4 and by what means the hollow portion 50 is provided, either the existing shape or the existing molding method can be used. For example, the partition wall 4 may be formed by being divided into two parts 4a and 4b and formed by fitting convexes 51 and concaves 52 provided in the respective parts.

  FIG. 8 shows an example of another partition 4 different from that shown in FIG. The partition 4 is solid only at the upper part, and the middle part and the lower part are all hollow parts 50. The lower part of the partition wall 4 can be used by being inserted into protrusions or grooves such as 100, 101, 102, 103, 104,... Provided on the bottom 6 of the container body 2.

The container sectional view showing one embodiment of the present invention. The container sectional view showing other embodiments of the present invention. The container sectional view showing other embodiments of the present invention. The container sectional view showing other embodiments of the present invention. The top view of the cover body back surface in the embodiment shown in FIG. The top view of the container main body in the embodiment shown in FIG. Sectional drawing which shows an example of the partition used for this invention. Sectional drawing which shows another example of the partition used for this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cold storage container 2 Container body 3 Lid 4 Bulkhead 4 'Lid side bulkhead 5 Side wall A Low temperature side compartment B High temperature side compartment 5a Low temperature side compartment side wall 5b High temperature side compartment side wall 6 Bottom 6a Low temperature side compartment bottom 6b High temperature side compartment 7 top plate 7a top plate of low temperature side section 7b top plate of high temperature side section D dry ice R cooling agent 8 fitting protrusion 9 vent hole 10 concave notch 11 concave notch 12 exhaust slit 13 opening / closing part 13a opening / closing part 13b opening / closing part x Step portion y Step portion 15 Refrigerant placement plate 16 Refrigerant placement plate 17 Refrigerant receiving plate 18 Concavity and convexity engagement portion 18 'Concavity and convexity engagement portion 21 Convex portion 22 Convex portion 23 Convex portion 24 Convex portion 30 For fitting Concave part 31 Convex convex part 32 Fitting concave part 50 Hollow part 51 Convex 52 Concave 100, 101, 102, 103, ... Protrusion 110, 111, 112, 113, ... Protrusion

Claims (14)

  A cold storage container composed of a container body and a lid that can be divided into two or more compartments having different cold insulation temperatures, and increasing the thickness of any or all of the side wall, bottom surface, and lid of the container body in the low temperature side compartment A multi-compartment cold insulation container provided with a partition that divides the container into the low-temperature compartment and the high-temperature compartment.   A multi-compartment cold insulation container comprising a container main body and a lid that can be divided into two or more compartments having different cold insulation temperatures, wherein a partition wall is detachable from the container main body.   The multi-compartment cold storage container according to claim 1, wherein the partition wall is detachable from the container body.   4. The multi-compartment cold storage container according to claim 2 or 3, wherein a groove or a projection into which a partition wall can be inserted is provided on the bottom and / or side wall of the container body so that the volume of the compartments can be changed.   The multi-compartment cold storage container according to any one of claims 2 to 4, wherein a groove or a projection into which the partition wall can be inserted is provided in the lid so that the volume of the compartments can be changed.   The multi-compartment cold storage container according to any one of claims 1 to 5, wherein the density of the partition walls is different from the density of the container body.   The multi-compartment cold storage container according to claim 1, wherein the partition wall is integrally formed with the container body, and the partition wall thickness is 15 mm or more.   The multi-compartment cold storage container according to any one of claims 1 to 7, wherein a ventilation hole is provided in the partition wall.   (1) It has a recess for mounting the refrigerant mounting plate at the upper end of the side wall and the upper end of the partition in the low temperature side section, or (2) the refrigerant is mounted in the vicinity of the upper side of the side wall of the low temperature section and in the partition The multi-compartment cold storage container according to any one of claims 1 to 8, wherein the multi-compartment cold storage container has a projecting portion for mounting the plate body.   (1) It has a recess for mounting the refrigerant mounting plate on the upper end of the side wall and the partition wall of the high temperature side section, or (2) the refrigerant mounting plate near the upper part of the side wall of the high temperature side section and the partition wall. The multi-compartment cold storage container according to claim 9, wherein the multi-compartment cold storage container has a convex part for mounting the body.   (1) The refrigerant storage space is provided at the lower part of the low temperature side compartment of the lid, or (2) the refrigerant storage space is provided at the lower part of the low temperature side compartment of the cover and the high temperature side compartment of the lid. The multi-compartment cold storage container according to any one of claims 1 to 8.   The multi-compartment cold storage container according to any one of claims 9 to 11, wherein a lid portion corresponding to the low-temperature compartment is configured to be inserted from above.   The multi-compartment cold storage container according to any one of claims 9 to 11, wherein a lid portion corresponding to the high temperature side compartment is configured to be insertable from above.   The multi-compartment cold storage container according to any one of claims 1 to 13, wherein dry ice is used as a refrigerant for the low-temperature compartment.

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